MiStar 7.3 Moving Thermal Energy

Cat 1 and Cat 2 drank the same amount of water. The water that Cat 2 drank was cooled so that it is at a lower temperature than the water Cat 1 drank.

The water in which of these cats drank water with less thermal energy?

• Cat 1

• Cat 2

• they are the same

• neither cat's water had thermal energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

You take a cake out of the hot oven. The rate of thermal energy transfer between the cake pan and its surroundings depends on which of the following?

• temperature of the cake pan

• temperature of the air

• mass of the cake pan

• mass and temperature of the air and cake pan

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following does the total amount of thermal energy of a system NOT depend on?

• The types of matter in the system.

• The amount of matter in the system.

• The kinetic energy of the molecules in the system.

• The potential energy of the system.

I took some cupcakes out of the oven and place them on the counter. After some time, the cupcakes, the pan, and the air in the room will be at the same temperature. Why?

• Thermal energy will be transferred from the cupcakes and the pan to both the counter and the air.

• Coldness will be transferred from the counter to the cupcakes and the pan.

• The pan will stay hot because thermal energy does not transfer from pans to air.

• Thermal energy will be transferred from the air to the cupcakes only.

Tags

NGSS.MS-PS1-4

Croc 1 and Croc 2:

-Both Crocs are made up of the same types of molecules.

-Both Crocs are made up of the same number of molecules.

- Croc 1 has more thermal energy than Croc 2.

How does the speed of the molecules in Croc 1 compare to the speed of the molecules in Croc 2?

• Croc 1's molecules move faster

• Croc 2's molecules move faster

• both Croc's molecules move at the same speed because they are made up of the same molecules

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

You are investigating how adding different masses of metal washers to a cup of water affects the temperature of that water.

Cups 1 and 2 each contain the same amount of room temperature water at 22° C, with plenty of space to add more material.

You lower a different mass of metal washers into each cup. All washers are made of the same material and are at the same temperature, as shown.

To Cup 1, you add two cold washers.

To Cup 2, you add six cold washers.

You then measure the temperature of the water in each bucket.

Which bucket of water will have the greatest change in temperature and why?

• Cup 1 because you added more mass to Cup 1

• Cup 2 because you added more mass to Cup 2

• Cup 2 because more thermal energy will be transferred from the cold washers to the cup

• Cup 1 because there is less thermal energy transferring to the washers from the water.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What is the boundary of the system?

• outside of the coke bottle

• cap of the coke bottle

• inside of the coke bottle

• top line of the coke where it meets the air

What are the inputs and outputs into this system?

• Warm Air is input, cold soda is output

• No inputs, cold fizzy air is output

• there are no inputs or outputs

• Warm air is input, no outputs

Tags

NGSS.MS-PS1-4

What are the energy INPUTS or OUTPUTS now that the cap is off this cold bottle of Coke?

• Warm air is input, no outputs

• No inputs, cold fizzy air is output

• No inputs and no outputs

• Warm Air is input and cold fizzy air is output

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Baby Yoda is interested in how different air temperatures affect the speed at which gas molecules move. With The Mandalorian, he plans the following investigation:

1. Choose a very hot day.
2. Close the spaceship door and turn off all fans. Measure the temperature of the air.
3. The Mandalorian stands in the corner of the spaceship with a stopwatch.
4. Baby Yoda, 10 meters away in the opposite corner of the spaceship, releases a very strong-smelling gas.
5. The Mandalorian with the stopwatch measures the amount of time before he can smell the gas.
6. They repeat the steps above on a very cold day.

Which variable is the temperature of the spaceship?

• Independent Variable

• Dependent Variable

• Constant (control variable)

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4